Quote:
Originally Posted by ServerGenius
Pirahnas are not agressive at all. They get agressive when they are REALLY hungry. I've swam between pirahnas. As long there's enough food in the water
they will NOT attack/feed on humans. In fact they don't like human flesh.
If they are REALLY hungry they'll just eat anything including their own.

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They also get aggressive when there's blood in the water, regardless of being hungry or not. Regardless, kudos to you for having the cojones to swim among them, I certainly would've stayed dry.